remove extra md5 calculation.
remove extra md5 calculation.

bingosummer/bosh-azure-cpi-release,cloudfoundry-incubator/bosh-azure-cpi-release,cloudfoundry-incubator/bosh-azure-cpi-release,gossion/bosh-azure-cpi-release,cloudfoundry-incubator/bosh-azure-cpi-release,bingosummer/bosh-azure-cpi-release,bingosummer/bosh-azure-cpi-release,gossion/bosh-azure-cpi-release,gossion/bosh-azure-cpi-release